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thermal

  1. F

    Combi-boiler plus Thermal heat store - problem and suitable replacement recommendation

    Hi, sorry to bother you all with this but I am really struggling to find a suitable combi-boiler replacement and a knowledgeable heating engineer to discuss options. Ive tried to note as much relevant details below - apologies if its too long or irrelevant. Any help most gratefully received...
  2. S

    Heating hot water only after solar thermal install.

    I had solar thermal installed recently, the system is a viessmann and goes with our viessmann boiler. The controls are on the boiler, seems to work well. I spoke to viessmann technical after the install and they and the install advised to change the water heating from the boiler to only come on...
    • spacey3
    • Thread
    • heating hot water install thermal water
    • Replies: 8
    • Forum: Renewables
  3. C

    Pump constant pressure or proportional to the thermal output

    Hi I have a worcester boiler and one of the settings is 3-d1 (Pump range map) as attachment below Now the installer has set it away from the default of 250mbar to proportional to the thermal output and also changed 3-d3 to 30%. The issue I now have is that with the zones fully open then...
  4. Marti

    Solar thermal system appears to be low on pressure-opinions appreciated

    If my mates in the Electrician's Forum see me in here, jus' tell I got lost, alright ;) So, I was called out to the home of a good client. They have a thermal solar installation but were not completely clear of the difference - hence calling in a sparky and I was interested as to how thermal...
  5. D

    Solar pv or solar thermal for space heating via thermal store

    I’d like some advice and opinions please. I have a 150 year old stone cottage ( 2 foot thick solid stone walls) some roof insulation and double glazed windows in a very cold exposed hill top position in the north western Yorkshire Dales. we are planning to put underfloor heating downstairs and...
  6. B

    Solar Thermal Cylinder Installation

    I had a solar thermal cylinder installed last week. The installers had an issue with one of the valves and installed a 15mm pipe (see red arrow in picture) instead of the 22mm at the valve. Is this going to be an issue? The 15mm then feeds into the larger 22mm. However, my concern is that...
  7. Jock Spanners

    Has anyone fitted a hybrid ASHP/solar thermal/unvented cylinder system with gas boiler back up?

    Good Afternoon All, This is my first time on the renewables forum so please forgive my ignorance. I've been interested in ASHPs for about 15 years but have always doubted their economic viability - especially for retrofits. Now that there will be no gas connected to new builds in 4 years I am...
  8. Z

    DPS Thermal Store- hot water/flow issues

    Hello, hope you're all enjoying the bank holiday weekend. I have a customer with a Dedicated Pressure System (DPS) Heat Bank System (Thermal Store). If they run one bath/shower, it's fine. If they try to run two at once the water at both is barely even warm. I know the house has been extended...
  9. Husk24

    Solar Thermal installed - does this look right?

    Hi guy I had solar thermal installed and wanted an expert opinion, had it installed today and its not working and the installer is to return. I get the impression when it comes to the electrical side the installer hasn’t the foggiest, he replaced the water valve and now my boiler does not heat...
  10. P

    Thermal Store cylinder noisy

    Hi all, I moved to my flat 3 years ago and I noticed since then than the hot water thermal store cylinder is noisy (kettle noise) when the heating element is on (around 2 hours a day during economy 7 hours) This wasn't a problem before since it is located far from the main bedroom but now, we...
  11. J

    Range flowmax thermal store.

    Evening Ive got a customer with a range flowmax. The customer is saying that the hot water is hot but only for 1 shower but before they would get three. There is one immersion at the bottom on economy 7 with a boost. Its a vented thermal store. At first i thought the blending valve is playing...
  12. K

    Wood stove above with thermal store below - can this work safely?

    Hello all, I'm searching for advice on my new system being fitted into a very old stone house in France. We have purchased a thermflow 300L thermal store with a built-in expansion tank to work with multiple heating inputs (solar, electric and wood burning stove boiler). We are running 7 rads...
  13. T

    Is this a leak. Thermal image camera

    Old cottage was renovated 5 years ago, all new pipes underscreeded floor. This year started getting damp on the walls internally however it's an old stone cottage built of the ground over 100 years ago and half built block in the 1980s. A new french drain been installed all around the outside...
  14. M

    Testo 865 Thermal Imaging Camera

    For sale Testo 865 Thermal Imaging Camera Only a year old used once and in perfect condition. £695 ovno Pm if interested. Chris
  15. P

    Thermal expansion issues

    Hello all! I'm located in the US. I had a water pressure issue (150PSI) until I replaced the water pressure regulator (replaced the faulty one with a WATTS LF25AUB-RK,) which came preset to 50PSI. It held that pressure for about a week. Slowly but surely, the water pressure's been creeping up...
  16. L

    Which Showering device is best suited for a thermal store?

    I have an Albion indirect mainsflow thermal store installed in July 2011 with a 120 litre capacity. I live in a block of communal council flats built in 1979. I have gravity fed water tanks on the roof of the property about 3-4 stories high. Pressure to my property on the cold water supply is...
  17. U

    Installers with experience of Hybrid Solar Thermal / ASHP and Combi Boiler in Sussex Area

    Hi, I'm looking for someone to help specify, and possible install hybrid system. Initially the bungalow was setup for all low temp (underfloor heating and Fan assist heating rads), but couldn't afford ASHP at the time, so fitted a Vaillant Ecotec Plus 937 Combi as the heat source. Now looking to...
  18. M

    Thermal store combi boiler, hot water flow rate.

    Can anyone tell me the hot water flow rate on a thermal store combi boiler? As opposed. To a 40kw combi that will deliver nearly 16litres per minute. And any recommendations for a good thermal store boiler thanks.
  19. H

    Oil usage up after replacing thermal store

    Hi there, we replaced our Rotex Sanicube thermal store after discovering large amounts of sediment in our hot water supply. It was replaced with a Wocester Bosch unvented 250l cylinder. The sediment issue was resolved immediately but have noticed a large increase in oil usage. Probably going...
  20. J

    Thermal store nightmare

    Sorry for a long post but we have a complicated thermal store situation Over the summer we had a new solid fuel stovax back boiler installed and upgraded our hot water storage tank to a thermal store. We have not had reliable hot water since. Initially we only used the emersion and after...

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